William B. Cushman Posted November 12, 2010 Report Share Posted November 12, 2010 Hi everyone, I'm installing a G4 Extreme on a '93 Toyota MR2 with the 3S-GTE engine (turbo). The old (stock) ECU has two inputs/outputs for the power steering control module, and one for the ABS module. I also have the 'Electrical' manual for this car, but in the case of the power steering two different diagrams show the signal flow in two different directions. So my first question is, does anyone know whether these signals, 'PS' and 'PSCT' go in to the Extreme, requiring a DI input, or out of the Extreme, requiring an 'AUX' output? I think there is one of each, but which is which? The second question is: what are they for? My guess is that the input signal to the Extreme, whichever that one may be, is simply to 'idle up' and compensate for steering load . . . but the output from the Extreme has me baffled. I'm also guessing that 'ABS' is an input to the Extreme, but what is it for? Thanks for your help! BillyDoc Quote Link to comment Share on other sites More sharing options...
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